Home / 28,031.73-38,683.51-15,284.89

Finding the Fourth Proportional to 28,031.73, 38,683.51 and 15,284.89

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Solution

The fourth proportional to 28,031.73, 38,683.51 and 15,284.89 is: 21,092.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,031.73 : 38,683.51 = 15,284.89 : x
  2. Step 2: Convert to fraction form
    28,031.73/38,683.51 = 15,284.89/x
  3. Step 3: Cross multiply
    28,031.73x = 38,683.51 × 15,284.89
  4. Step 4: Simplify right side
    28,031.73x = 591,272,987.71
  5. Step 5: Solve for x
    x = 591,272,987.71/28,031.73
  6. Step 6: Final answer
    x = 21,092.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.